Because if you take them for 1st or 2nd level spells, once they become at-will, they'll no longer serve a purpose.
You do realize once a spell transforms from 3 casts per rest to 3 casts per encounter, you're still dealing with the number 3 which is increased by the talent?
Ability to leave the map from any edge instead of pre-defined 'world map buttons'
Choose what side to spawn into a map. I'd say about half my playtime was spent zoning into Gilded Vale from the right side and having to run to the inn on the left.